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D. W. PARKER &-L. F. GRISWOLD.

EXTENSION LAMP. v No. 311,520. Patented Feb. 3, 1885.

INVENTOR/U 4; 0 m BY MWAW/e ATTORNEY NlTE Starts arnsir tries.

DEXTER V. PARKER AND LEiVIS F. GRISiVOLD, OF MERIDEN, CONNECTI- OUT, ASSIGNORS TO THE CHARLES PAR-KER COMPANY, OF SAME PLACE.

EXTENSION-LAMP.

SPECIFICATION forming part of Letters Patent No. 311,520, dated February 3, 1885.

Application filed April 14, 1834. (No model.)

To on whom it may concern: the action of the smoke and heat from the Be it known that we, DEXTER \V. PARKER chimney, because it passes up through the and LEWIS F. GRISWOLD, both citizens of the weight. United States, residing at Meriden, in the In the accompanying drawings, Figure 1 55 county of New Haven and State of Oonnectirepresents an elevation of an extension-lamp cut, have invented certain new and useful Imembodying our invention. Fig. 2 represents provementsin Extension-Lamps, of which the a vertical section through our improved following is a specification, reference being weight. Fig. 3 represents a detail view of had therein to the accompanying drawings. the cast-metal inner ring of said weight. Fig. 60 This invention relates to extension-lamps of 4 represents a detail view of the sheet-metal the sort employing counterbalanceweights; jacket. and it consists in making the weight of a cast In said drawings, A designates the canopy metal annular inner part and an encircling of a suspensionlamp fixture; B, the suspendsheet-metal part orjackct, the latter being ing-chains thereof; 0, the crown-ring; D, the 6 1 provided with pendants. shade attached to said crownring by screws d,-

Previous to our invention it has been cus- E, the base-ring of the shade; F, the harp sustomary to use an open cast-metalring-shaped pended from said crown-ring; F, arms atweight as a counterpoise to the lamp and its tached to said harp and supporting said base harp or support; but this weight has been ring, and G the lamp, with its chimney G, 70 used in low'priced lamps, which were comsupported on said harp. Thebase-ringis proposed of material that did not tarnish or corvided with pendants e, the base-ring and the rode. It has advantages over ballshaped crown-ring, as well as the canopy, being made weights, also heretofore used, ih admitting the of bronzed sheet metal, so as to presentalight chimney up through the weight, thereby aland ornamental appearance. lowing the greatest amount of extension pos- In the foregoing parts there is no novelty,

sible to the fixture, and preventing the tarand we make no claim thereon. nishing and corroding of the weight. The One end of each suspensionchain B is at most serious objection to the ringshaped. tached to said crown-ring, and the other end, weight is that its open shape necessarily makes after being passed over a pulley in the canopy, s 0 it cumbersome. This we avoid by suspendis attached to the counterbalance-weight H. ing ornamental pendants from the lower edge Heretofore these weights have been made of the weight, which impart to the weight a either annular or globular in shape, the fori more finished and artistic appearance, and mer being cast as rings and used on cheap fixalso serve as apart of the counterpoise, theretures. They have an advantage over the glob- 8 5 5 by reducing the size of the ring-shaped castular or ball-shaped weights suspended over metal weight. the chimney, in allowing the smoke and heat The main end and object of the invention to ascend without tarnishing or corroding the consists in the employment of an ornamental weight, and also in allowing the extension of metallicshell or ring, adapted to be applied to the fixture to the utmost degree possible, ingo 40 said weight by any suitable method, for the asinuch as the open shape of .the weight will purpose of serving as a cover to the openpermit the chimney to pass up into it. shaped cast-metal weight, from which said Ourimproved annular counterbalance-weight pendants may be suspended. By the use of consists of an inner cast-metal ring, H, to the sheet-metal annular shell or ring as a cover which the suspension-chains B are attached, 5 to the heavy open cast-1netal weight we are and an outer sheetmetal jacket, H which enenabled, by subjecting the shell to the imcircles said ring H, and is provided with an pression of dies or rolls, to furnish a highlyannular flange, If, extending under the same. ornamental open ring-shaped weight, thus ad- This jacket or shell H is provided with movmitting of the use of thisparticular weight able glass pendants H- The upper edge of rco in expensive fixtures at small initial cost, the said jacket or shell is cut to form a series of shell'of which will not become tarnished by tongues, h and the ring H is cast with recesses h in its upper and outer edge. By bending one of said tongues into each of said recesses the parts Hand H are securely fastened together. Of course other means of fastening might be used.

In the complete lamp the weight has the same bronzed or rich gold appearance as the rest of the fixture, and the pendants harmonize with those on the base-ring.

The detachable pendants not only addto the beauty of the fixture, but enable us to vary the gravity of the counterbalance-weight at will.

We are aware that it is not new to construct a weight for an extension-lamp in annular shape, the inner part being a casting and the outer part an ornamental shell not of sheet metal. This, however, is not our invention, and we do not claim it, the lightness and beauty of our sheet-metal shell not being found in any other, and additional fastening devices being required by reason of the inflexibility of any shell except a sheet-metal one. We are also aware that ball-shaped weights have been covered with sheet-metal shells of corresponding form. These shells,

however, are much more difficult and expensive of construction than our annular shells, and they are also exposed to the tarnishing action of the smoke and flame, which our annular weighta'voids, the products of combustion passing up through the open space in the middle when the lamp smokes without touching the shell. Our annular core and annular I sheet-metal shell make up a different weight from either of those described, and one which possesses advantages not shared by them. I

We are also aware thatitis not new to make a weight for extension-lamps of an annularlygrooved cast-metal core and a conical sheetmetal shell, the latter being spun into the grooves of the former to attach them together.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. A Weight for an extension-lamp, consisting of an annular casting and an inclosingshell of sheet metal attached thereto and covering the same, for the purpose set forth.

2. A weight for an extension-lamp, consists ing of an annular cast-metal core having recesses formed therein, and an annular sheetmetal inclosing-shell provided with tongues, which are bent into said recesses to attach said shell to said core, substantially as set forth.

8. In a weight for extension-lamps, the castmetal inner ring, H, provided with recesses h in its upper and outer edge, in combination with the shell H provided with the annular flange if, which extends under said cast-metal inner ring, and with thetongues h at its upper edge, which are bent into said recesses h, for. the purpose of holding the shell in place, sub stantially as set forth.

In testimony whereof we affix on r tures in presence of two Witnesses.

DEXTER W. PARKER. LEWIS F. GRISVVOLD.

signa- WVitnesses:

FREDK. PEASE, RALPH A. PALMER. 

